Red Hat Security Advisory: pcs security update
Affects Red Hat pcsSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 11:52 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 2.8% chance of exploitation in 30 days – higher than 86% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 29 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
Red Hat has released updated pcs packages that fix this vulnerability. Users should apply the provided security update for pcs as detailed in Red Hat advisory RHSA-2026:11470 and the referenced article https://access.redhat.com/articles/11258. Applying this update mitigates the risk by addressing the lodash arbitrary code execution flaw.
Description
A security update for the pcs packages in Red Hat Enterprise Linux addresses a vulnerability in lodash (CVE-2026-4800) that allows arbitrary code execution via untrusted input in template imports. The pcs packages are used for command-line configuration of Pacemaker and Corosync utilities. This vulnerability is rated as having an important security impact by Red Hat.